ios Cannot convert value of type '()' to expected argument type 'String' swift 3

Question

I have updated my code to Swift 3 and now getting the error above. I think there is something wrong with the way selector is called. Anyone please help me, What is wrong.

Answer 1

只需使用swift 3选择器语法更改您的选择器语法，如下所示。

 #selector(self.hideKeyboard)

Answer 2

The syntax for Selector has been changed in Swift 3. You don't need to add round brackets after selector name if there is no parameter in the selector.

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(hideKeyboard))
self.view.addGestureRecognizer(tapGesture)

Answer 3

For anyone looking for a solution can try this.

let tap = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
view.addGestureRecognizer(tap)

// function which is triggered when handleTap is called
 func handleTap(_ sender: UITapGestureRecognizer) {
     print("Hello World")
  }

I know it's loo late to answer, but it can help others.